SAP-C02 Design for New Solutions Practice Question
A company is designing a serverless application using AWS Lambda, Amazon API Gateway, and Amazon DynamoDB. The application experiences sudden spikes in traffic. Which AWS service should be used to handle the traffic spikes without losing any requests?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Amazon SQS
Amazon SQS can buffer requests during spikes, allowing Lambda to process them at its own pace without dropping any.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Amazon SNS
Why it's wrong here
SNS is pub/sub, it does not buffer.
- ✗
AWS Step Functions
Why it's wrong here
Step Functions orchestrate workflows, not buffer requests.
- ✓
Amazon SQS
Why this is correct
SQS decouples the API from Lambda and buffers requests.
- ✗
Amazon Kinesis Data Streams
Why it's wrong here
Kinesis is for real-time streaming, not request buffering.
Quick reference
Cloud Service Model Comparison
| Model | You Manage | Provider Manages | Examples |
|---|---|---|---|
| IaaS | OS, runtime, apps, data | Hardware, hypervisor, networking | EC2, Azure VMs, GCP Compute Engine |
| PaaS | Apps and data | OS, runtime, middleware, hardware | Elastic Beanstalk, Azure App Service |
| SaaS | Data and settings only | Everything else | Microsoft 365, Salesforce, Workday |
| FaaS / Serverless | Function code only | Infra, scaling, runtime | Lambda, Azure Functions, Cloud Run |
| CaaS | Containers and apps | Kubernetes, OS, hardware | EKS, AKS, GKE |
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This SAP-C02 practice question is part of Courseiva's free Amazon Web Services certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SAP-C02 exam.